1.1.1走进生物实验室—2021-2022学年生物冀少版七年级上册同步课时作业
※题型：单选题※知识点：单选题※试题难度：较易<br>在操作显微镜时,要使镜筒升降的幅度最大,应该调节( )<br>A.光圈 B.粗准焦螺旋 C.细准焦螺旋 D.物镜<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/79655e92f7a34086a95eac505281c5c4/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/2e98ce8648f74311ae0b19de4285c51b/98924237DDBB4A4DB3841F1E6BC04427.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>显微镜上遮光器的作用是( )<br>A.使光线经过通光孔反射到镜筒内<br>B.调节光线的强弱<br>C.遮住全部光线不使其反射到镜筒内<br>D.使光线更加的均匀<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/02584bda0ee142d6af23f027b1ed577e/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/9b954f2d9efb401eb6de3e385b4a4f22/48ABC4B2DEB33D5168E7932DC280AB14.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>以下是某台光学显微镜的镜盒里的镜头,物镜是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/12/A5D09520D4A4192AD893EE9ECF863FCD.png"><br>A.甲和乙 B.丙和丁 C.乙和丙 D.甲和丁<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/30d5003fdc9f4fa1a751ee016ddfab81/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a19516a7fee64a31990337f579fa7a51/0050E898914D937890904764232F6C1B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图:在使用显微镜的过程中,先用低倍镜观察,若想换用高倍镜观察,需转动( )<br><imgA.① B.④ C.⑦ D.⑤<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2016/edf07468a870498698802209552494ce/D9A7E0722DAB5479A60928D5B8864BC6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2016/fc09ffadbf084e7abf4329fd0545c4d9/544EEF0574FDF7DE5B04FFCB7B23A966.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>下列目镜和物镜的组合中,所观察到的细胞体积最大的是( )<br>A.10×、20× B.10×、10× C.10×、45× D.16×、45×<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/abe89e0bc95d45f68b6e1b5d60c32ce7/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/addd3819476f46cf950a29bfd1b1e27b/A0A96A262A3DD382A5B8BA83BCAD4B4C.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>下图为光学显微镜的相关结构示意图,其中的①②为物镜,③④为目镜。下列组合中,观察到的细胞数目最多的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/9/4/54C259A4F82856B9F66709DC354C6802.png"><br>A.①④ B.①③ C.②④ D.②③<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/1b51771184ed4095af60656901c74eac/E7F0EDF83F40244C8F0C84B97471AED6.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/e62e6eb814944de99de6fca379422dc6/BBF9F9D2D2A21DF42F00FD9A9696217F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>显微镜的功能是帮助我们观察( )<br>A.很大的物体<br>B.较远的物体<br>C.肉眼无法看清楚的生物体及其微小结构<br>D.动植物标本<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/18a1daa94b234cbbaa7631270d22a699/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/b4aa9d7ddfc14041b1a76bff79ad8aba/382A8CBAB41C25292E00BEE142806AF7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图所示的种实验器具中,能够用于观察物体的是( )<img src="https://picture2.zhihuicn.com/testImage/2/2019/7/18/4B26293139D456C57C1D1CD3CEA75415.png"><br>A.① B.② C.③ D.④<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2019/97d9efd14a0942699f4caf62cf809948/06CA09E70C17EF8BA2D3B8C70D693953.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2019/46e850d6e68046eea9f90c37215bf886/75DB1215DF70640EBE49F737F5467D88.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>如图为一组生物实验器材,它们都可以用于( )<img src="https://picture2.zhihuicn.com/testImage/2/2020/8/22/DDD37617D79401E0540EA8A89370BC99.png"><br>A.解剖 B.加热 C.染色 D.盛放液体<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2020/aa01bde5fbfd4ee9b16c51d860b730cc/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2020/a758205250f14ad0ba533ccec26d6281/3B953628BCEF265922449AC9B145B98B.png"><br><br>※题型：读图填空题※知识点：读图填空题※试题难度：中等<br>下列是生物实验室常用的仪器,据<br>图完成<br>下面的问题。<br><img src="https://picture2.zhihuicn.com/testImage/2/2021/6/29/C939C5A53B855ACE9158BDE184B3E638.png"><br>1.用于吸取和滴加少量的液体的是[]。<br>2.加热烧杯、锥形瓶等玻璃仪器时,除酒精灯外,需要使用[]和[]。<br>3.对所观察的物体起放大作用的是[]。<br>4.用于夹取载玻片、盖玻片或其他生物材料的是[]。<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2021/d4c4b9aaad6b439e8a7e4d49449ff677/A78BE234273F4E6579E8EB0C7AC006DC.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2021/ba4499ea9d904f9196abe0851cbb54cb/76B73CF0A05DA824BB8F37113055D007.png"><br><br>
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